Http www fixmyroof co uk videos and guides chimneys chimney capping in this video i show 3 different ways to cap off a disused chimney that does not alter.
Capping unused chimney flue.
Sealing and insulating the clay flue at the top and bottom of the stack will ensure the job will yield these desired results.
There are a few products you can purchase to block the chimney just above the damper.
Unused chimneys not only waste a lot of heat they also pose a potential damp problem as well as being a cause of smoking fireplaces and stoves.
When used daily as they are intended to be used fireplaces can be efficient.
Discussion in building started by overlandrover 14 apr 2007.
Sealing your older unused chimney should not be a complicated task as long as attention is paid to prevention of air intrusion as well as environmental and pest control.
How to close an unused chimney.
Flue ventilators can be found on our chimney pot page.
If your home is a basic one fireplace one chimney pot affair this will obviously be a simple matter but a lot of homes will have 4 or more chimney pots that serve 4 fireplaces some of which may be blanked off bricked up or unused.
Unused though they can waste a lot of heat up the chimney.
Capping the flue is one of the best ways to close up the top of the chimney as it will still allow air to get in and out preventing condensation from building up.
One is an inflatable balloon type product that will seal the flue.
The fireplace flue can be a major source of energy loss.
Last year we had our soild fuel boiler replaced by an electric boiler.
Insulating the bottom of the chimney.
Use a tape measure to find the length of the flue on the longest side.
Measure the length and width of the flue on your chimney.
Capping unused chimneys flue ventilators uk.
The technician that fitted the electric boiler cut back the flue the the ceiling filled part of the flue with insulation and then applied cement to the underside.
You should cap any unused chimneys with a flue ventilator.
How to determine which chimney flue needs capping.
Only one chimney is still in use for a multifuel burner one was sealed many years ago while the other two have vents into the bedrooms where fireplaces used to exist.
Write down your measurements so you don t forget them.
Even new cast iron dampers allow air loss.
A contracter has advised us to have the two unused bedroom chimneys piped together via an inverted y type connection and then piped out through the roof.
As a rule of thumb taking a common semi detached home using.
Capping an unused chimney flue.
Cooled or heated air from inside your home can escape through the chimney causing your hvac system to work.
